Shakuni’s desperation was akin to that of a caged bird uselessly fluttering its wings for revenge. Kunti was the focal point of his rage for sure but he did not intend to kill her. He rather wanted to bleed her with unendurable wounds. And for that, he had to harm Pandu as that would hit Kunti the hardest. However, it was not easy as Pandu was the king now and access to him was difficult due to tight security and protocol. All Shakuni could do was to wait for his chance.